What should be visible on the operating handle of a MED?

The correct answer highlights that a red indication strip should be visible on the operating handle of a Main Evacuation Device (MED). This red indicator plays a crucial role in ensuring safety and operational efficacy during emergency situations. The red color is universally recognized as a warning sign, which alerts operators and crew members to the device's status and functionality. When operating an emergency device, clear visual cues are essential for facilitating quick and decisive action, particularly in high-pressure scenarios like evacuations.

The presence of a red indication strip specifically indicates important operational contexts, such as whether the device is armed or disarmed. This visibility ensures that personnel can immediately assess the readiness of the evacuation device, which could be life-saving in an emergency.

In contrast, the other options represent features that are not typical for the operating handle of a MED. The green pointer, while indicative in other contexts, does not provide the necessary urgency associated with evacuation. A blue indicator light might be used in other aviation instruments but does not apply to the status visibility of a MED. Likewise, a yellow warning tag may signal caution but lacks the communicative power needed for the immediate understanding required during an emergency evacuation. Thus, the red indication strip is the correct representation of necessary operational readiness on a MED.